As a composer, Huber began with serial music influenced by Anton Webern.[5] His international breakthrough came in 1959 with the world premiere of his chamber cantata Des Engels Anredung an die Seele at the Weltmusiktage (World Music Days) of the Internationale Gesellschaft für Neue Musik in Rome.[5][7] Unusually for the time, he used consonant intervals within a strictly serial context.[8]